biosynthesis of nanoparticles - algae

1. ‫سبحان‬ ‫خداوند‬ ‫بنام‬
Biological synthesis of silver nanoparticles, focusing on algae: non-toxic
and eco-friendly way of nanotechnology for a promising future
Hamid Salari Joo
Related teacher: Prof. Kalbassi

2. 3 methods of synthesis
Physical
Chemical
Biological

3.  2 approaches
- bottom up approach
- top down approach

4. Marine bio-nanotechnology is an exciting and upcoming area of research. The
biologically diverse marine environment has a great promise for nanoscience and
nanotechnology.

6. Experimental
 Capillacae (Pc)
 J. Rubins (Jr)
 C. Sinusa (Cs)
 Faciata (Uf)
1. Algae 2. Fabrics
Desized

7. Methods Extraction of water soluble Polysaccharides
Chemical analysis of Crude Hot Water Soluble
Polysaccharides (CHWPS)
Acid hydrolysis of polysaccharides
GLC analysis of the hydrolyzated polysaccharide
Synthesis of Silver nanoparticles (Ag-NPs)
Characterization of Silver nanoparticles
3) TEM analysis
2) FTIR analysis.
Treatment of cotton fabrics
Antimicrobial activity.
1) UV–visible spectral
analysis.
R = reduction rate in the number of colonies
A = number of bacterial colonies from untreated fabrics
B = number of bacterial colonies from treated fabrics

8. Results

9. Results

10. Results

11. Results

13. • The organizational key is that techniques carry
out a method which is consistent with an
approach.
• An approach = dealing with something
• Method = a particular way of doing something:
• A method is more explicitly thought out. A good
method details each step of the plan.
An approach is more general. It could be merely
the way you set about doing things